U panels are low-profile panels typically used for architectural utility, interior walls, or light duty roofing. PBR (Purin Bearing Rib) panels have a larger, higher rib profile designed for structural integrity and excellent water-shedding capabilities on low-slope roofs.
Standard roll forming machines are single-profile because the roller stations are pre-configured to shape a specific design. However, a double-deck roll forming machine can be custom designed to produce both profiles on a single machine body with dual-level styling.
Most standard roofing roll forming machines are built to process galvanized steel, galvalume steel, or prepainted steel coils (PPGI) within a thickness range of 0.3 mm to 0.8 mm (approx. 22 to 29 gauge).
These machines utilize a high-precision PLC control system alongside a hydraulic post-cut mechanism. The length and quantity of the panels can be programmed, ensuring clean cuts with minimal deformation and tolerance of within ±1mm.
Standard production speed is around 15 to 20 meters per minute (including cutting time). High-speed versions equipped with flying shears or specialized motor controls can achieve even higher outputs.